The years 1450-1750 brought enormous changes to the North American continent. The native Americans, or Indians, as the Europeans came to call them, first encountered European explorers, and before long, saw their world transformed and largely destroyed by European settlers. And European explorers not only ventured to the lands and natural wealth of the Americas; they also traveled to Africa, where they began a trans-Atlantic slave trade that would bring millions of Africans to the Americas as well. This slave trade would over time lead to a new social and economic system: one where the color of one's skin could determine whether he or she might live as a free citizen or be enslaved
for life.